Insulator.



J; ALSBERG. USULATOR' APPLICATION FILED NOV 18, 1908.

1,015,224. 1 Pzitented Jail-16,1912;

' 2SHEBTS.SHBET 1.

' ATTORNEY J. ALSBEB'gQ.

v INSULATOR.- APPLICATION FILED NOV. 18, 1909.

' Patented Jan. 16, 1912 2 SHEETS-SHEET- 2.

INVENTOR WITNESS? r QflfQfMM ATTORNEY JULIUS ALsBnnGjor' NEW roan, N. Y.

- INsULATo'n.

Specification of Letters Patent.

Patented e r91 2.

Application filed November 18, 1808. Serial No. 463,285.

T 0 all whom it may concern:

Be it known that I, JULrUs ALSBERG, a citizen of the United States,residing at the city of New York, borough of Manhattan,

in the county and State of New York, have invented certain new anduseful Improvements in Insulators, of which the following is a full,clear, and exact specification.

My invention relates to improvements in means for supporting electricconductors, and the same has for its objectmore particularly to providea simple, efficient and re liable device for preventing injury to theconductors or the apparatus in the. circuit due to an abnormal riseofpotential due to lightning or other causes.

Further, said invention has for its object to provide a support forelectric conductors by means of which the abnormal increase of potentialmay be conducted from the line and caused to expend itself until thenormal conditions are again restored.

Further, said invention has for its object to provide an insulatingsupport for an electric conductor having means combined therewithwhereby the arcing due to'such sudden rise of potential may be conductedaway from the insulating member proper of the support and finally causedto rupture itself or blow out.

To the attainment of the aforesaid objects and ends my inventionconsists in the novel details of constructioinand in the combination,connection and arrangement of parts hereinafter more fully described,and then pointed out in the claims.

In the accompanying drawings forming part of this specification, Figure1 is a side elevation, partly in section, showing one form of insulatorconstructed according to and embodying my said invention, and Fig. 2 isa detail side view, partly-in section, illustrating a modification.

In said drawings 5 denotes a supporting arm and 6 a flexible insulatingmember, formed in the shape of a rope composed of strands of insulatingmaterial. The upper end of said insulating member is spliced to the bodythereof to form a loop 7 having a thimble 8 therein adapted to receive ahook 9 of a bolt 10 secured to said supporting arm 5 by a nut 11. Thelower end of said insulating member 6 is frayed out and secured bycementor other suitable medium within a conical socket 12 provided at itslower end with a loop or bail 13. a

14 denotes a clamp provided with a hook or eye 15 for securing the sameto the loop or bail 13 at the lower end of the insulating member 6, and16'denotes an electric con- "ductor secured in said clamp 14.

17 and 18 denote tubular protecting sections preferably made of glass,porcelain or other suitable insulating material and ar-- ranged one uponthe other and surrounding said insulating member 6. The protectingsection 18 is provided at its lower end with an enlarged recessedportion 19 having a shoulder 20 at the base of said recess adapted torest upon theupper or smaller end of the conical socket 12, and at itsupper end said protecting section 18 is provided with an outwardlyprojecting bead 21, and an inwardly projecting bead 22 adapted tocontact with the insulating member 6 and hold the same properly centeredwithin said protecting section 18. The lower end of the protectingsection 17 is also provided with .an enlarged recessed end 23 which isadapted to receive the upper end of the protecting section 18, and uponthe outer surface of said protecting section 17, above said enlargedrecessed portion 23, is provided an annular bead 24. 25 denotes aninwardly projecting bead arranged at the upper end of said tubularprotecting section 17.

26 denotes aconical protecting hood made of. glass, porcelain or metalor other suitable material or combinations of material and secured tothe lower end of the protecting section 17 above the enlarged end 23thereof by cementor other securing means, and 27 denotes a similar hooddisposed above the upper ends of the protecting section 17 and theinsulating member 6 and secured rigidly in position upon the bolt 10against the underside of the supporting arm 5.

28, 28 denote curved rods arranged above the conductor 16, and securedintermediate their ends by clamps 29 29 to the opposite edges of thehood. 27 with their inner ends terminating adjacent to the upper end ofthe protecting section 17, and their outer ends free and extending to apoint above the top of the protecting hood 27.

Then protecting hoods 26, 27 are formed of insulating material as shownat Fig. 2 conductors 30, 30 are provided extending from the curved rods28, 28 to the bolt 10, and a conductor 31 extending from the upper endof the bolt to another conductor in the line, or to the ground, shouldbe provided, as indicated in dotted lines in the drawing. I

The operation of the apparatus is as follows: Under normalconditions ofline potential the insulator will serve to duly support the conductor 16and prevent leakage therefrom.- However, as soon asthe potential in theline rises owing to lightning or any other abnormal conditions ordisturb ances which-would tend to cause arcing and burn out the.apparatus in the circuit, or. the insulators, the current will jumpfrom theconductor 16 to one of the curved rods 28, 28 at some pointsthereof, for example be-' tween the points A, B, and then traveloutwardly toward the ends of said rods 28, 28 to a point, for example 0,wherethe distance between the conductor 16' and said rod 28 is so greatas to cause the arc to rupture itself. This action will be repeated aslong as the abnormal potential is present in the line, and as soon asconditions return to the normal this action will cease.

It is to be noted that the operation of my improved insulator is notaffected to any material extent by varying conditions of temperature andatmosphere.

In this application I have not claimed the specific construction of theinsulator apart from the lightning conductor with which "it is combined,as the same constitutes the subject matter of a divisional applicationfiled December 18, 1911, Serial No. 666,392.

Having thus described my invention, what I claim and desireto secure byLetters Patent 1s:

1. The combination with a conductor and an insulator therefor,comprising an insulating element and a protecting hood, and a pluralityof conducting members on said protecting hood arranged in the samevertical plane as said conductor and at an angle thereto, substantiallyas specified.

2. The combination with a conductor and an insulator therefor, of aplurality of conducting members on said insulator arranged in thesamevertical plane with said conductor and at an angle thereto,substantially as specified.

- 3. The combination with a conductor and an insulator therefor, of aplurality of conducting members secured to said insulator adjacent tosaid conductor and arranged in the same vertical plane with the saidconductor and at'an angle thereto; said conducting members having theirinner ends lowermost, substantially as specified.

4:. The combination with a conductor and an insulator therefor, of aplurality of conducting members secured to said insulator adjacent tosaid conductor and arranged in the same vertical plane therewith, andatan angle thereto; said conducting members having their inner endslowermost, substantially as specified. i V

5. The combination with a conductor and an insulator therefor, of aplurality of conducting members secured intermediate their ends to saidinsulator and arranged in the same vertical plane with said conductor,and at an angle thereto; said conducting members having their inneropposing ends lowermost, substantially as specified.

6. The combination with a conductor and an insulator therefor, of aplurality of curved conducting members secured intermediate their endsto said insulator and arranged in the same vertical plane with saidconductor; said conducting members having their inner ends extendingdownwardly and terminating in proximity to each other and their outerends extending upwardly, substantially as specified.

7 The combination with a conductor and an insulatortherefor, having aprotecting hood, of a plurality of curved conducting members securedintermediate their ends to the edge of said protecting hood, and lyingin the same vertical plane as said conductor,

.with their inner ends extending downwardly and terminating adjacent toeach other, and their outer ends free and extending upwardly from theedge of said protecting hood, substantially as specified.

8. A device of the character described comprising an insulating member,means for supporting said insulating member, a series of protectingsections surrounding said insulating'member, at protecting hood ar--ranggd above each of said protecting sections, and inclined conductingmembers secured intermediate their ends to the edge of one of saidprotecting hoods and extending Epwardly therefrom, substantially asspeci- 9. A device of the character described comprising an insulatingmember, means for supporting said insulating member, a series ofprotecting sections surrounding said insulating member, a protectinghood arranged above each of said protecting sections, inclinedconducting members secured intermediate their ends to the edge of one ofsaid protecting hoods and extending upwardly therefrom, and conductorsextending from said inclined conductors to the means vfor supportingsaid insulating member, substantially as specified.

Signed at the city of New York, in the county and State of New York,this twelfth day of November, nineteen hundred and eight.

JULIUS ALSBERG. v Witnesses:

CONRAD A. Dlnr nron, A. R. ANGUS.

